VPN与GPRS技术在泵站数据通信中的协同优化研究

本研究以泵站数据通信为背景,探讨了VPN与GPRS技术在数据通信中的协同优化问题。通过选择合适的加密算法和协议,网络的安全性得到保障;优化网络架构、分流处理可减少数据传输的延迟和丢失,提升了传输速度;网络监控与管理,确保网络稳定性,及时发现和处理故障。研究结果表明,在数据通信中采用VPN与GPRS技术的协同优化,可以有效提高数据传输的效率和安全性,具有实际应用价值。

基于ZigBee与GPRS的智能渔业监测系统设计

考虑到智能渔业监测系统可以在很大程度上契合目前社会渔业发展进步的潮流,因此为了提升水产养殖渔业的智能化水平,同时保证池塘养殖渔业的产出量和质量,结合ZigBee与GPRS技术的各自优势,设计了一种池塘养殖智能化监测系统。研究分析了智能渔业监测系统的具体设计方案,此设计系统包括采集控制端、网关和服务器端,系统主要工作是负责监测所有的水质数据同时将这些数据传送给服务器端,服务器会对数据进行整合、分析和处理,而且远程控制还可以调节池塘的环境数据。此系统能够节约人力、物力以及时间资源,可以在低成本投入的同时提升渔业养殖的质量和产量。

基于GPRS网络的恶劣环境煤矿机电设备动态信息实时采集系统

煤矿机电设备动态信息是保证煤矿生产管理的核心依据,因此,为保证其动态信息采集的实时性,设计基于GPRS网络的恶劣环境煤矿机电设备动态信息实时采集系统。该系统的现场终端模块依据采集指令,通过控制器控制多通道采集卡,经由串口连接传感器感知煤矿机电设备数据;GPRS网络模块采用上行和下行的网络结构组建GPRS网络;依据网络的传输协议,将现场终端模块感知的所有数据传送至远程中心;远程中心对感知的数据进行备份存储。测试结果表明,该系统网络传输时的平均时延均低于1.74 s,可保证数据传输的实时性;系统性能的开动率均在94.8%以上,采集数据的乱序率均低于0.035%,为设备运行管理提供可靠依据。

基于GPRS的带式输送机无线监测系统设计研究

文章以GPRS技术为基础,设计了一款具有远程监测功能的带式输送机无线监测系统,首先介绍了系统软件设计框架,分析了传感器节点、路由节点、网关节点、数据中心四个软件程序设计方法。然后从传感器节点、路由节点与网关节点几方面介绍了硬件总体设计方案,并对传感器节点监测电路、无线射频模块接口电路、存储模块电路等几个关键模块电路设计展开了分析,经验证所设计的无线监测系统可以满足带式输送机的故障监测需求。

A New Class of Simple,General and Efficient Finite Volume Schemes for Overdetermined Thermodynamically Compatible Hyperbolic Systems

In this paper,a new efficient,and at the same time,very simple and general class of thermodynamically compatiblefinite volume schemes is introduced for the discretization of nonlinear,overdetermined,and thermodynamically compatiblefirst-order hyperbolic systems.By construction,the proposed semi-discrete method satisfies an entropy inequality and is nonlinearly stable in the energy norm.A very peculiar feature of our approach is that entropy is discretized directly,while total energy conservation is achieved as a mere consequence of the thermodynamically compatible discretization.The new schemes can be applied to a very general class of nonlinear systems of hyperbolic PDEs,including both,conservative and non-conservative products,as well as potentially stiff algebraic relaxation source terms,provided that the underlying system is overdetermined and therefore satisfies an additional extra conservation law,such as the conservation of total energy density.The proposed family offinite volume schemes is based on the seminal work of Abgrall[1],where for thefirst time a completely general methodology for the design of thermodynamically compatible numerical methods for overdetermined hyperbolic PDE was presented.We apply our new approach to three particular thermodynamically compatible systems:the equations of ideal magnetohydrodynamics(MHD)with thermodynamically compatible generalized Lagrangian multiplier(GLM)divergence cleaning,the unifiedfirst-order hyperbolic model of continuum mechanics proposed by Godunov,Peshkov,and Romenski(GPR model)and thefirst-order hyperbolic model for turbulent shallow waterflows of Gavrilyuk et al.In addition to formal mathematical proofs of the properties of our newfinite volume schemes,we also present a large set of numerical results in order to show their potential,efficiency,and practical applicability.

全路GPRS系统共用设备故障对行车业务的影响分析

针对近年来铁路GSM-R网络中偶发大面积进路预告、调度命令异常的问题,结合全路GPRS共用设备运用情况、GPRS组网、承载的铁路业务特点等开展研究。对各铁路局不同厂商核心网设备访问GPRS共用设备的业务逻辑进行分析,研究GPRS不同业务运用场景和运用机制,梳理GPRS共用设备主用节点设备故障或脱网对业务造成的影响、应及时采取的措施和优化手段等;结合GSM-R网络实际组网情况,研究数据网对承载全路GPRS业务的影响,分析业务消息的路由转接,进而针对可能发生的隐性故障,判断故障点及影响范围,将安全风险关口前移,有效提升GPRS故障应急处置水平,缩短故障延时和缩小影响范围,为共用设备主用节点退网检修、异地主备倒换测试等提供相关参考依据;提出全路数据网承载GPRS业务的维护建议和优化措施。

基于GPRS与Web技术的液氮液位监控信息平台设计

液氮常被应用在制冷、生命科学工程、化学与食品加工等行业生产、研究流程中。在储藏液氮阶段,一旦出现液位过低,液氮罐内部压力会显著增加,若没及时补充液氮,容器可能会因承压超极限而发生爆炸。本文从液氮液位监控信息平台设计,以GPRS与Web为核心技术,由整体结构、功能设计、软硬件设计等维度入手进行系统开发,旨在实现对液氮储罐液位的远程智能化监控,为我国液氮应用企业提供借鉴与参考价值,保证液氮存储的安全性与供应稳定性。

GPRS水情遥测中心接收装置的设计研发

提出一种GPRS水情遥测中心一体化标准化接收装置,采用模块化设计,实现了设备的标准化和集成化,具有外观标准简洁、模块布置规范合理、安装方便等优点,其双电源模块和电源切换模块的设计以及运行状态在线监测和实时状态显示功能的应用,解决了传统技术中接收装置各模块连接不规范、单一电源设计容易造成启动故障以及无法网络监测设备运行状态的问题,提高了装置的安全性和稳定性。

基于GPRS的电力配网线损监测系统构建方法探析

线损即线路损耗,具体是指电能在输电线路传输时产生的能量损耗,减少线损有助于促进电力系统运行效率的提升。为有效解决电力配网的线损问题,可对线损开展实时监测,并在发现损耗超过规定限值后,及时采取相应的措施进行处理。在配网线损实时监测中,可合理应用线损监测系统,在系统构建的过程中引人通用分组无线业务(General PacketRadio Service,GPRS),以此来提高数据传输质量。本文在分析电力配网线损监测系统总体框架的基础上,从系统硬件设计和软件程序开发两个方面,对基于GPRS的电力配网线损监测系统构建方法展开探析,期望能够对降低配网线损有所帮助。

基于μC/OS-II的GPRS远程监控系统设计

随着信息技术和数字技术的迅猛发展,通信技术在宽带通信网络和无线通信领域取得了巨大突破。这些技术的进步为各个行业带来彻底变革的机会,其中包括无线监控系统。文章以无线监控系统中实际案例为设计对象,旨在通过结合GPRS模块和单片机实现该无线监控系统的功能需求。系统采用模块化管理的策略,以确保系统高效运行。通过将各个部件模块化设计,有效进行数据采集,及时响应不同的指令,并按照任务工作安排执行相应工作,提升系统的效率和可扩展性,为后续发展提供了便利。系统实现嵌入式远程监控系统的各种功能,系统终端根据功能需求分类,为操作者提供了简洁易懂的人机交互界面,方便操作者下达指令,快捷实用。

基于GPRS技术的输电线路状态数据通信系统设计

在现代电力系统管理中,实时监测输电线路的状态至关重要,这不仅有助于提前预防故障,而且能优化能源分配和增强系统的可靠性。通用分组无线业务(General Packet Radio Service,GPRS)技术作为一种成熟的无线数据传输手段,为远程输电线路监测提供了一种有效的通信解决方案。文章设计基于GPRS技术的输电线路状态数据通信系统,重点分析系统的总体架构、GPRS通信模块的设计、数据管理与传输策略以及安全性与容错机制的构建,并阐述测试系统的方法及其效果。

SM/GPRS在移动通信基站动力环境监控中运用分析

为了满足移动通信基站动力环境监控项目的需求,并减少传输资源限制对通信监控覆盖的影响,本文将SM/GPRS技术引入到移动通信基站动力环境监控中。首先,文章阐述了动力环境监控系统的功能。然后,从定时扫描与通信控制、告警通信上报以及门禁事件数据处理三个方面出发,对SM/GPRS技术具体应用展开讨论。通过这些讨论,移动通信网络基站动力环境监控项目的覆盖范围得到了扩大,同时也提高了通信质量和电源系统管理水平。

Sea water temperature auto-monitoring system based on general packet radio service (GPRS)

This paper introduces the design and implementation of sea-water temperature auto-monitoring system based on General Packet Radio Service （GPRS）. This system integrates modern wireless communication technology, the signal gathering technology and computer network technology. MSC1210 microcontroller is used in data collection device in order to make system accurate and fast. In addition, wireless and Internet technologies are used for transferring and displaying collected field data. A prototype system has been completed and tested in field trials. The results proved the feasibility and usefulness of this system for monitoring the temperature. By using this system, a lot of resources and money can be saved.

基于GPRS的无线城市照明监控系统设计研究

城市发展前进过程中的社会文明体现在众多方面,城市的社会风貌在先进技术的推动下实现了良好的发展。民众对于城市的要求逐渐提高,使城市中的各项基础设施均需呈现出更高的保障效果。灯光作为城市环境中最为重要的组成部分,是城市现代化发展的重要指标。文章研究基于GPRS通信方式下的照明监控设计,充分分析了照明监控系统中各结构的设计内容,以期达到节能优化的设计效果。

Dynamic management system of ore blending in an open pit mine based on GIS/GPS/GPRS

Using GIS, GPS and GPRS, a dynamic management system of ore blending in an open pit mine has been designed and developed. A linear program was established in a practical application. The system is very good at automatically drawing up a daily production plan of ore blending and monitors and controls the process of mining production in real time. Experiments under real conditions show that the performance of this system is stable and can satisfy production standards of ore blending in open pit mines.

基于GPRS和PIC18F85J90单片机的药品仓库环境监测系统设计

基于通用分组无线服务技术(General Packet Radio Service,GPRS)和PIC18F85J90单片机的药品仓库环境监测系统,实现了对药品仓库环境信息的采集、数据的传输与存储、报警和远程GPRS监控,具有较强的实际意义与广泛的应用前景。

Monitoring dispatch information system of trucks and shovels in an open pit based on GIS/GPS/GPRS

Using GIS,GPS and GPRS,an intelligent monitoring and dispatch system of trucks and shovels in an open pit has been designed and developed.The system can monitor and dispatch open-pit trucks and shovels and play back their historical paths.An intelligent data algorithm is proposed in a practical application.The algorithm can count the times of deliveries of trucks and load- ings of shovels.Experiments on real scenes show that the performance of this system is stable and can satisfy production standards in open pits.

Mining production information management system in an open pit based on GIS/GPS/GPRS/RFID

Using GIS, GPS, GPRS and RFID, a dynamic information management system of digital mining in an open pit was designed and developed.A linear programming model was set up in a practical application.By the model, the system can automatically draw up production plan of ore blending well every day.The system can monitor and dispatch open-pit trucks and shovels well, and can play back their historical paths.It can monitor and control the process of mining production in real time.By RFID, the system can also count the number of trucks'delivery and shovels'loading automatically.Experiments on real scenes show that the performance of this system is stable and can satisfy production standards of mining in open pits.

Collection System of Soil Moisture Information Based on ZigBee and GPRS

Real-time monitoring and wireless transmission of farmland soil moisture have been paid with more and more attention in the research of agricultural drought monitoring, early warning and prevention and control technology. The hardware design and software design of soil moisture monitoring in farmland were carried out, and a monitoring system based on the principles of ZigBee and GPRS technologies was developed and applied to the actual monitoring of soil moisture in farmland. This study provides a good idea to promote real-time monitoring, wireless transmission and intelligent management of soil moisture in farmland.

基于GPRS的配电网馈线自动化故障定位技术

以往馈线自动化技术中的监控终端,在判定故障线路时极易引发非故障线路断电,为此,引入GPRS(General packet radio service,通用分组无线服务)技术研发出一种配电网馈线自动化故障定位技术。根据无方向性馈线故障定位算法,结合表征各单元间邻接关系的单元邻接表,定位出馈线故障所属区段,采用GPRS通信模式实现信息传输与共享,基于GPRS通信模式与馈线监控终端的联邦式架构建立GPRS通信模块的协同故障防护策略,通过GPRS监控终端模块,实现故障定位自动化。以某县乡级配电网模拟故障发生,验证得出GPRS通信在实现自动化方面更具可行性,且该项技术有效性与适用性较强。